add form object for registration
add errors partial, add custom registrations controller, create registration formobject
fix registration formobject, add registration view
Merge branch 'feature/devise-branch' of github.com:mikolajgrzyb/timetracker into feature/devise-branch

Conflicts:
	db/schema.rb
fix migration
add html5 and email validators, wip on formobject
Merge branch 'feature/devise-branch' of github.com:mikolajgrzyb/timetracker into feature/devise-branch

Conflicts:
	config/routes.rb